Personally Im against Thick Fat. For one, I dont think the Ice weakness is that big a deal. In CAPS metagame there are really only 2 STAB users of Ice, Syclant and Mamoswine. Both of these pokemon have access to Ground moves, one has STAB Earthquake, Thick fat isnt going to make much difference to them. For nonSTAB, the majority of Icebeam users are water, which will threatened by electric atacks for the most part. While on the physical side of things, pretty much every Icefang/Punch user has access to EQ.
Conceptually I also have issues. Thick Fat is already on Snorlax, which is still considered an OU pokemon. While it isnt its only ability, it certainly seems like one of the least neglected abilites out of the whole list presented.
I also think the ability that is chosen should be adding more to the metagame than just a new typing. Thick Fat just feels subservant to the Typing, trying to cover a weakness that doesnt even necessarily need patching. I would rather an ability that takes center stage and expands an already strong typings strengths.
It also doesnt feel like breaking much new ground considering there is already a dragon with no Ice Weakness and x4 resistance to Fire already in the OU metagame.
Agreed with completely. I sincerely hope people don't pick Thick Fat just because it compliments the typing. Kingdra has that ground covered, so there isn't much we can learn from covering the Ice weakness. The long term goal for this CAP was to make the focus an interesting underused ability and hopefully introducing some new play dynamics through this ability, and not through typing.
As an alternative, I'd like to suggestive the duality of Gluttony and Unburden. The CAP metagame is already heavily stall based and I think it'd be fun to see how we could get this tankish Pokemon with (anticipating here) average offensive stats to try to pull off a sweep using these abilities.
Gluttony activates the berry at 50% health, and is the safer of the two options. Unburden, if a berry was used, would activate at 25%, riskier, but offers the opportunity to boost two stats instead of one; speed and, say, the offensive stat of your choice.
If we don't give this thing Dragon Dance (not all dragons get it), we have the opportunity to try a new method of establishing a sweep. It may not be as straightforward as Salamence's method, we could have fun compensating for that, and it does give us the leeway to be flexible with our movesets as we have the liberty to boost whichever stats we want.
If we do give it Dragon Dance, we have the option of, with some smart maneouvering, boosting up to three or four different stats in one turn even, allowing for a very unique mixed sweeper (that resists bullet punch, no less).
So I'm asking everyone, please, please don't go with the 'safe' tanky, wally, abilities like Thick Fat or Marvel Scale. We have the opportunity to go in some very interesting directions here. Gluttony and Unburden are just examples; we have a whole bunch of cool choices available, so let's play with a little of the unknown.